Abstract
For the purpose of improving the productivity of manufacturing metal molds and dies, an operational prototype of a real time numerical control system has been developed. It accepts the geometrical data of the parts to be machined, and thereon generates the NC commands in real time during the machining process. The software architecture is first introduced which has been designed to materialize the characteristic capabilities of the system. The algorithm is described that has been developed for the high speed calculation of the intersections among multiple surfaces given as the geometrical input data and the detection of the three dimensional interference of the cutting tool. The simulation results of tool interference demonstrate the possibility of the high rate calculation that is necessary for the real time mode generation of the NC command.
